Round Cut Diamond Size Chart

Chart of diamond sizes showing the relationship between carat size, diameter, and surface area for round cut diamonds.

Diamond Color Grade Guide (With GIA Color Scale)

Diamond color directly affects price in a measurable way but isn't always as noticeable as people think.

What To Know About Diamond Carat Size

Carat is probably the most easily discernible and defining aspect of a diamond. Here we explore and advise you on exactly what to consider when choosing the carat size that's right for you.

4 Carat Diamond Rings: The Ultimate Guide

Buying a 4 carat diamond is no small feat – the cost alone raises the stakes for every aspect of the decision making process. For example, a relatively minor tweak like stepping down a color grade from G color to H color could save you over $10,000.

Marquise Cut Diamond Size Chart

See the average surface area and dimensions for marquise shaped diamonds from 0.3 carats to 5 carats.